If you already don’t know about this, do yourself a favor. The best thing that I have done yet is to get the Siren Marine monitoring/alarm system. The boat texts you if it’s stolen, too cold/hot, low batteries, crackheads on-board, shore power alert, high water, bilge pump on/off and location/perimeter alert.
Built- in GPS and cell service provides exact location at any time. After installing a few extra peripherals, it sets off a siren and strobes and flashing LED decklights when someone intrudes. Probably the smartest thing I’ve bought in years.
Image: Ethan’s boat “Fissues”